Device for filling the receiver of pipe presses, particularly of lead cable presses



Dec. 19, 1933. F. HANFF DEVICE FOR FILLING THE RECEIVER OF PIPE PRESSE' PARTICULARLY OF LEAD CABLE PRESSES Filed Dec. 2, 1932 Patented Dec. 19, 1933 DEVICE FOR FILLING THE RECEIVER OF PIPE PRESSES, PARTICULARLY OF LEAD CABLE PRESSES Ferdinand Hanff, Berlin-Charlottenbnrg, Germany, assignor to Siemens-Schuckertwerke Aktiengesellschaft, Berlin-Siemensstadt, Germany, a corporation of Germany Application December 2, 1932, Serial No. 645,339, and in Germany December 3, 1931 2 Claims.

My invention relates to a device for filling the receiver of sheathing presses, particularly of lead cable sheathing presses.

In the hitherto known presses with vertical receiver, the foreign substances and oxides which are entrained with the metal to be pressed collect on the surface of the molten metal during the filling of the receiver, and their removal from the surface, as is well known, encounters great difficulties. It is also difficult to remove the lead froth which is formed on the surface of the metal to be pressed after the receiver has been charged as a result of the air reaching the receiver. The foreign substances, oxides and the lead froth, left on the surface of the molten metal pass into the press chamber during the pressing process, whence they are forced into the lead sheath. The foreign substances, oxides and lead froth affect, consequently, the strength of the lead sheath to such an extent as to cause leakages. To overcome the above drawbacks, it has already been proposed to collect the foreign substances and oxides in a pot-like member arranged on the receiver. In order to remove the oxides, a shearing device has been hitherto employed by means of which the head, containing the foreign substances is sheared after the molten metal has passed into a solid state. Such a device is complicated and very expensive, since the shearing device must be operated with hydraulic pressure in order to produce the desired pressure for shearing the dead head.

The object of my invention is to provide an economical device of simple design. The device is operated by hand and permits the removal of the foreign substances in a reliable manner.

The invention is illustrated in the accompanying drawing which represents a longitudinal vertical section through the top of a press cylinder provided with the novel device. According to the invention, I provide a potlike member 2,

resting on top of the receiver or press cylinder 1. The bottom of pot 2 is designed in the form of a truncated cone 3 extending upwardly within said pot and having an opening 4 in its upper central portion, through which the molten lead, supplied beneath the bottom of thepot, rises within the latter after the receiver 1 has been filled up. The filling of the receiver is preferably effected by inserting through suitable openings provided in the walls of the pot 2 a supply spout 6 into the receiver, through which the lead passes into I the receiver. This spout may be welded to the wall of pot 2. During the filling of the receiver the opening 4 at the top of truncated cone 3 is open. After the filling is completed and all dross has been ejected through opening 4 into pot 2, the opening may be closed by a plug v5, so that the dross cannot flow back into the receiver. The pot mayv be held by any suitable means to the mouth of the receiver before charging the latter. It would preferably be supported in' the upper part against the press plunger 7 in order to hold the pot firmly in position. At the end of the filling, the pot may be raised and removed, for instance, with the aid of any suitable lifting device, provided that the lead surface is still in a liquid state. 7

I claim as my invention:

1. In a lead press the combination with a press cylinder of a filling hood mountable on top of the cylinder and having a filling spout in its wall for supplying liquid lead to the cylinder, said hood being pot shaped and having a bottom in the shape of a truncated cone, said cone having an opening at its top for discharging the dross floating on the lead surface into said hood as the filling of the cylinder is completed.

2. In a lead press the combination with a press cylinder of a filling hood mountable on top of the cylinder and having a filling spout in its wall for supplying liquid lead to the cylinder, said hood being pot shaped and having a bottom in the shape of a truncated cone, said cone having an opening at its top for discharging the dross floating on the lead surface into'said hood as the filling of the cylinder is completed, means for closing said opening and means for removing the hood after the dross is discharged into it.

FERDINAND HANFF. 

